Qt读写注册表和ini文件

Qt刚上手，用起来有点感觉功能很强大，但是资料太少。
刚才上网查Qt怎么操作注册表，可网上几乎找不到什么东西。就去查Qt文档，摸索了一会儿，总算摸索出来了。相当简单。竟比Delphi还简单，比起VC就更不用提了。需要#include
    只举几个简单的例子：
1、用QSettings写注册表
 
QSettings *reg = new QSettings("HKEY_CURRENT_USER\\Software\\yinhaifan",  
                    QSettings::NativeFormat);  
    reg->setValue("registered",true);  
    delete reg;  
 
QSettings *reg = new QSettings("HKEY_CURRENT_USER\\Software\\yinhaifan", QSettings::NativeFormat); reg->setValue("registered",true); delete reg;
当然reg->setValue还可以写入字符串，整型之类的数据。
比如reg->setValue("registered","yes");
2、用QString读注册表
 
QSettings *reg = new QSettings("HKEY_CURRENT_USER\\Software\\yinhaifan",  
                QSettings::NativeFormat);  
if (reg->value("registered",false).toBool())  
{  
    QMessageBox::information(NULL,"information","registered");  
}  
delete reg;  
 
QSettings *reg = new QSettings("HKEY_CURRENT_USER\\Software\\yinhaifan", QSettings::NativeFormat); if (reg->value("registered",false).toBool()) { QMessageBox::information(NULL,"information","registered"); } delete reg;
还可以toInt(),toString()等。
3、用QSettings写ini文件:
 
QSettings *ConfigIni = new QSettings("D:\\a.ini",QSettings::IniFormat,0);  
ConfigIni->setValue("/config/node1",ui->lineEdit->text());  
delete ConfigIni;  
 
QSettings *ConfigIni = new QSettings("D:\\a.ini",QSettings::IniFormat,0); ConfigIni->setValue("/config/node1",ui->lineEdit->text()); delete ConfigIni;
4、用QSettings读ini文件:
 
QSettings *ConfigIni = new QSettings("D:\\a.ini",QSettings::IniFormat,0);  
ui->lineEdit_2->setText(ConfigIni->value("/config/node1","20").toString());  
delete ConfigIni;  
 
QSettings *ConfigIni = new QSettings("D:\\a.ini",QSettings::IniFormat,0); ui->lineEdit_2->setText(ConfigIni->value("/config/node1","20").toString()); delete ConfigIni;
  这几段代码都是我在Qt Creator里面写的，所以用ui->lineEdit*->text()和ui->lineEdit*->setText()做输入和输出了。
  在文档中的QSettings Class Reference部分讲的很清楚，在这里我就不多说了。也该睡觉了～

 

 

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